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Code Issues Releases Wiki Activity

cleanup

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This commit is contained in:
Pavol Rusnak 2013-09-10 01:41:10 +02:00
parent df79a330e6
commit d958d8a90e
3 changed files with 32 additions and 32 deletions
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8
ecdsa.c
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@ -39,7 +39,7 @@ void mod(bignum256 *x, bignum256 const *prime)
int i = 8; int i = 8;
uint32_t temp; uint32_t temp;
// compare numbers // compare numbers
while (i >= 0 && prime->val[i] == x->val[i]) --i; while (i >= 0 && prime->val[i] == x->val[i]) i--;
// if equal // if equal
if (i == -1) { if (i == -1) {
// set x to zero // set x to zero
@ -620,7 +620,7 @@ int is_zero(const bignum256 *a)
return 1; return 1;
} }
int bignum256_less(const bignum256 *a, const bignum256 *b) int is_less(const bignum256 *a, const bignum256 *b)
{ {
int i; int i;
for (i = 8; i >= 0; i--) { for (i = 8; i >= 0; i--) {
@ -654,8 +654,8 @@ int ecdsa_verify(uint8_t *pub_key, uint8_t *signature, uint8_t *msg, uint32_t ms
if (is_zero(&r) || if (is_zero(&r) ||
is_zero(&s) || is_zero(&s) ||
(!bignum256_less(&r,&order256k1)) || (!is_less(&r, &order256k1)) ||
(!bignum256_less(&s,&order256k1))) return 1; (!is_less(&s, &order256k1))) return 1;
inverse(&s, &order256k1); // s^-1 inverse(&s, &order256k1); // s^-1
multiply(&s, &z, &order256k1); // z*s^-1 multiply(&s, &z, &order256k1); // z*s^-1